Colon model



FIG. 1 is a perspective view of a colon model showing my new design.

FIG. 2 is a right end elevational view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a left end elevational view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a left side elevation view thereof.

FIG. 7 is a right side elevational view thereof. 

The ornamental design for a colon model, as shown and described. 